rapidly from ad 700 through to 83 ##0 , followed by a sharp decline . for the 120 square kilometres ( 46 sq mi ) area falling within the earth ##work defenses of the hint ##erland , the peak population is estimated at 51 ##7 per square kilometer ( 134 ##0 per square mile ) . in an area within a 12 kilometres ( 7 @ . @ 5 mi ) radius of the site core , peak population is estimated at 120 @ , @ 000 ; population density is estimated at 265 per square kilometer ( 68 ##9 per square mile ) . in a region within a 25 kilometres ( 16 mi ) radius of the site core and including some satellite sites , peak
rapidly from ad 700 through to 830, followed by a sharp decline. for the 120 square kilometres ( 46 sq mi ) area falling within the earthwork defenses of the hinterland, the peak population is estimated at 517 per square kilometer ( 1340 per square mile ). in an area within a 12 kilometres ( 7 @. @ 5 mi ) radius of the site core, peak population is estimated at 120 @, @ 000 ; population density is estimated at 265 per square kilometer ( 689 per square mile ). in a region within a 25 kilometres ( 16 mi ) radius of the site core and including some satellite sites, peak